Diode fault detection
AssigneeWisk Aero LLC
InventorsHongxia Chen, Rui Gao, Lewis Romeo Hom, Geoffrey Alan Long
Life of this patent
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Abstract
A power delivery system includes a controller, configured to receive a voltage indication signal indicating a measured voltage of a battery management system and to determine whether first and second diodes of the battery management system are faulty based on the voltage indication signal. The controller is also configured to respectively receive first and second current indication signals from first and second current sensors of the battery management system and to determine whether the first and second diodes of the first battery management system are faulty based on the first and second current indication signals.
Claims21
A power delivery system for an aircraft, the power delivery system comprising:
- a plurality of battery management systems, each comprising:
- a battery system,
- first and second diodes configured to conduct current from the battery system to a power supply node,
- a first current sensor configured to sense a first current of the first diode,
- a second current sensor configured to sense a second current of the second diode,
- a first switch configured to control a conductivity of a first current path between the battery system and the first and second diodes, and
- a second switch configured to control a conductivity of a second current path between the battery system and the first and second diodes;
- and
- a controller, wherein the controller is configured to receive a voltage indication signal indicating a measured voltage of a first battery management system of the battery management systems and to determine whether the first and second diodes of the first battery management system are faulty based on the voltage indication signal, and wherein the controller is configured to respectively receive first and second current indication signals from the first and second current sensors of the first battery management system and to determine whether the first and second diodes of the first battery management system are faulty based on the first and second current indication signals.
A method of operating a power delivery system for an aircraft, the power delivery system comprising:
- a plurality of battery management systems, each comprising:
- a battery system, and first and second diodes configured to conduct current from the battery system to a power supply node, the method comprising:
- with a controller, receiving a voltage indication signal indicating a measured voltage of a first battery management system of the battery management systems;
- with the controller, determining whether the first and second diodes of the first battery management system are faulty based on the voltage indication signal;
- with the controller, respectively receiving first and second current indication signals from the first battery management system;
- and
- with the controller, determining whether the first and second diodes of the first battery management system are faulty based on the first and second current indication signals.
Dependencies are inferred from the claim text.